Mathematics – Logic
Scientific paper
Dec 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974rspsa.341..331g&link_type=abstract
Royal Society (London), Proceedings, Series A, vol. 341, no. 1626, Dec. 10, 1974, p. 331-360. NASA-supported research.
Mathematics
Logic
19
Mars Atmosphere, Particle Motion, Space Environment Simulation, Wind Effects, Wind Tunnel Tests, Flow Distribution, Geostrophic Wind, Lift, Mars Surface, Mathematical Models, Reynolds Number, Surface Roughness Effects
Scientific paper
In order to determine the nature of Martian aeolian processes, an investigation is in progress which involves wind tunnel simulations, geologic field studies, theoretical model studies, and analyses of Mariner 9 imagery; this report presents the preliminary results. Threshold speed experiments were conducted for particles ranging in relative density from 1.3 to 11.35 and diameter from 10.2 to 1290 microns to verify and better define Bagnold's (1941) expression for grain movement, particularly for low particle Reynolds numbers and to study the effects of aerodynamic lift and surface roughness. Wind tunnel simulations were conducted to determine the flow field over raised rim craters and associated zones of deposition and erosion.
Greeley Ronald
Iversen James D.
Pollack James B.
Udovich Nancy
White Bebo
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